Reverse Runs Post Mistlands?

Hey all, I was just wondering if after the Mistlands update it’s still possible to do a reverse run of the game (beating last boss first and so on)

I know that inorder to navigate the Mistlands you’ll needs wisps which you’ll ultimately need Yagluth’s soul to create.

So my questions are:

1. Is it possible to find wisps without having to beat yagluth

2. If not, is it entirely impossible to navigate the Mistlands without them

I figure if you want to go into the Mistlands without them, you could technically go to a world generator website and find the Queen in your world and run blindly through the Mistlands until you find her, but that could be considered cheating

Let me know! I would love to try out a reverse run, I’m just not sure if they are viable anymore